Hey, there was a new scientific discovery – mice can sing! Although it was believed that only humans, some species of birds, bats, elephants, dolphins, seals and sea lions have an ability to sing, researchers found that mice also can imitate facial expressions and reproduce complex sounds. Male mice use treble sounds to seduce females and if they notice a potential competition somewhere nearby they change the tone of singing. The opinion that their singing is an instinctive activity is now replaced with scientifically proven assertion that it is a brain activity, like human singing.
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